target-i386: Avoid using locals outside their scope

x86_cpu_parse_featurestr has a "val = num;" assignment just before num
goes out of scope.  Push num up to fix the issue.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Reviewed-by: NIgor Mammedov <imammedo@redhat.com>
Reviewed-by: NEduardo Habkost <ehabkost@redhat.com>
Signed-off-by: NEduardo Habkost <ehabkost@redhat.com>

target-i386/cpu.c

@@ -1975,6 +1975,7 @@ static void x86_cpu_parse_featurestr(CPUState *cs, char *features,
         const char *name;
         const char *val = NULL;
         char *eq = NULL;
+        char num[32];
 
         /* Compatibility syntax: */
         if (featurestr[0] == '+') {
@@ -2000,7 +2001,6 @@ static void x86_cpu_parse_featurestr(CPUState *cs, char *features,
         if (!strcmp(name, "tsc-freq")) {
             int64_t tsc_freq;
             char *err;
-            char num[32];
 
             tsc_freq = qemu_strtosz_suffix_unit(val, &err,
                                            QEMU_STRTOSZ_DEFSUFFIX_B, 1000);